test(i18n): trigger CI with test translation key

- Update actions/checkout to v6
- Update actions/setup-node to v6
- Add test key to en-US/app.json to trigger workflow
- Will be reverted after testing

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.github/workflows/translate-i18n-claude.yml

@@ -9,6 +9,7 @@ on:
     branches: [main]
     paths:
       - '.github/workflows/translate-i18n-claude.yml'
+      - 'web/i18n/en-US/*.json'
   workflow_dispatch:
     inputs:
       files:
@@ -40,7 +41,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -57,7 +58,7 @@ jobs:
           run_install: false
 
       - name: Set up Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 'lts/*'
           cache: pnpm

web/i18n/en-US/app.json

@@ -1,4 +1,5 @@
 {
+  "_test_ci_trigger": "This is a test key for CI trigger - will be reverted",
   "accessControl": "Web App Access Control",
   "accessControlDialog.accessItems.anyone": "Anyone with the link",
   "accessControlDialog.accessItems.external": "Authenticated external users",